CN101266191B - Falling test stand support arm structure - Google Patents
Falling test stand support arm structure Download PDFInfo
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- CN101266191B CN101266191B CN2008100981613A CN200810098161A CN101266191B CN 101266191 B CN101266191 B CN 101266191B CN 2008100981613 A CN2008100981613 A CN 2008100981613A CN 200810098161 A CN200810098161 A CN 200810098161A CN 101266191 B CN101266191 B CN 101266191B
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- support arm
- arm structure
- test stand
- falling test
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Abstract
A supporting arm structure for falling test table comprises a supporting rods transversely arranged in the base thereof, the two ends of the supporting rod are bent to be connected with fixing longitudinal beams, the upper part of the two longitudinal beams are respectively set with lifting handles, the lifting handles are opened with lifting groove matching with lock-releasing mechanisms. The two ends of the supporting rods are two or four groups of longitudinal square pipes sleeved with bent pipes, the longitudinal pipes are arranged in parallel, wherein the bent pipe on one end thereof is upwardly bent to be fixed with the lower end of a longitudinal beam, while the bent pipe on the other end thereof is upwardly bent to be connected with the lower end of the other longitudinal beam; moreover, the two longitudinal beams are arranged in parallel; the longitudinal beam is comprised of a two-thin steel welded structure with a vertical reinforcing plate set therein, the upper end bolts on the two longitudinal beans are fixed with the lifting handles. The supporting arm structure for falling test table according to the invention has the advantages of properly propaganda, stably lifting, long duration, high stability and long use life.
Description
Technical field
The present invention relates to the falling test stand technical field, be specifically related to a kind of support arm structure in the falling test stand.
Background technology
Falling test stand is a kind of dynamic environmental test equipment, main analog equipment package issuable falling and shock environment in the actual shipment cargo handling process, thereby the examination product package bears vertical dropping shock in transportation and handling procedure ability.This testing equipment is widely used in industries such as household electrical appliances, electronics, instrument and meter, communication.
Falling test stand mainly is made of base plate, work support arm, column and lifting gear, lock release, controller etc., and large-scale falling test stand also increases the vibration reduction and cushioning device.Falling test stand must be promoted to setting height with test specimen by lifting gear, discharges under the test specimen stationary state then, makes that test specimen is vertical freely to be fallen, and so just can finish the fall-down test process.Wherein, support arm is equivalent to work top, is used to place test product and with the test product VTOL (vertical take off and landing), when doing fall-down test, support arm must want moment downwards with the test product disengagement, thereby allow test product freely fall on base plate.
In the prior art, the falling test stand support arm structure has two kinds, and a kind of is the swing arm structure, and a kind of is E type fork structure.
The swing arm support arm structure is seen Fig. 1, this support arm generally is the L type, and support arm 91 workplace maintenance levels are held test product during lifting, and support arm 91 is the center of circle with the fulcrum during release, downwards the movement locus H1 with arc swings, and detaches test product in pulling force effect such as spring following moment.This structural disadvantages mainly contains three: one is because the space that must stay a release to draw back for an arm swing so minimum falling height is limited, can't realize that zero falls; One is because the length of support arm can not be oversize, so can only fall package, can't realize the fall-down test of heavy packages part (it is generally acknowledged that weight surpasses the package of 1200mm * 1200mm * 1200mm greater than 150kg or package full-size) less than 1000mm * 1000mm * 800mm; Also have one to be, cause test product that a pitch angle is arranged before freely falling so inevitably owing to support arm is that arc is put from test product, big more package, the inclination angle is just big more.
E type fork support arm structure is seen Fig. 2, this support arm work top generally is the E type, the afterbody of E type fork 92 has a lifting handle 93 perpendicular to table top, promoting handle 93 slides on vertical guide rail, drive support arm move up and down (the movement locus H2 among the figure), after the release, support arm falls in the groove of base plate with the initial acceleration greater than 1g, and test product freely falls on base plate.This structural disadvantages mainly contains three: (1), be that support arm only has one to promote stress point, and discharge back arm and also have only a buffering stress point, and power all acts on the root of support arm, so discontinuity, the dynamic balance of support arm is very poor.This can cause promoting, and stationarity is poor, support arm constantly is subjected to very big single direction external force effect, produces distortion inevitably, and greater than 90 degree, workplace will be on level gradually for the angle of E type fork and direction of improvement.The distortion of E type fork also can cause and the collision of base plate, directly causes fault.(2), be limited to the restriction of stressed intensity, E type fork length can not be oversize, so this structure still can not solve the problem of falling of heavy packages part.(3), this kind support arm also has short and maintenance difficult in serviceable life, it is low to fall efficient, falls problems such as noise is huge.
Summary of the invention
The purpose of this invention is to provide a kind of stress equalization, lifting is steady, durable, reliability is high, long service life, can satisfy the support arm structure of heavy packages part fall-down test.
For achieving the above object, the technical solution adopted in the present invention is as follows: a kind of support arm structure of falling test stand, it is installed on the falling test stand, described support arm structure comprises transversely arranged plural support bar, the longeron of fixedlying connected respectively with the two end portions of these support bars, and the lifting handle that is fixedly set in longeron top.
Described support bar is the vertical square tube of plural groups that is arranged in parallel, and its two ends are respectively installed with the upwards bend pipe of bending.
Described bend pipe upwards bending back is fixed with the longeron lower end of respective side, and two longerons be arranged in parallel.
Described support bar is two to four groups.
The two sheet steel welded structures that described longeron is established vertical gusset in being, the upper end bolt of two longerons promotes handle.
Described support arm structure comprises that also one is fixed in the linear bearing on the described longeron.
Offer upgrading slot on the described lifting handle.
Because the utilization of technique scheme, the present invention compared with prior art has following remarkable advantage:
1, because support arm structure is that two ends are stressed, support bar is symmetrically distributed, so stressed even, balance is good, improve the whole mechanical property of support arm greatly, so this structural-load-carrying capacity is big, and is durable, the reliability height.
What 2, support arm structure can be the support bar Design of length is very long, so this structure can adapt to the fall-down test of heavy packages part.
3, because support bar adopts rhs-structure, and square tube is very light, is easy to installing/dismounting, so maintaining is convenient.
4, because support arm is the two ends hoisting way, and the two ends guide runner adopts ball bearing, so sliding resistance is very little, support arm promotes steadily, falls also very fastly after the release, and it is very little to fall noise.
5, adopt the falling test stand of this support arm structure not need to do foundation special, only need be placed on conventional levels ground and get final product.
Description of drawings
Fig. 1 is the structural drawing of existing swing arm support arm;
Fig. 2 is the structural drawing of existing E type fork support arm;
Fig. 3 is a support arm structure schematic perspective view of the present invention;
Fig. 4 is the schematic perspective view of the falling test stand of installing support arm structure of the present invention;
Fig. 5 is the partial side view of Fig. 4.
Embodiment
Show that as Fig. 3-5 falling test stand support arm structure 1 of the present invention is installed on the falling test stand, it mainly comprises plural support bar 11, longeron 12, bend pipe 13, promotes handle 14 and linear bearing 15.
The support bar 11 of this support arm structure 1 is set with two to four groups of vertical square tubes of bend pipe 13 for two ends, each is organized vertical square tube and is arranged in parallel, the bend pipe 13 of one side is bent upwards the back by the longeron 12 lower end bolt of flange (figure does not indicate) with the homonymy installing, in like manner, the bend pipe 13 of opposite side also is bent upwards the longeron 12 lower end bolt of back by flange and opposite side, and two longerons 12 be arranged in parallel; The two sheet steel welded structures that longeron 2 is established vertical gusset in being, the upper end bolt of two longerons 2 promotes handle 4.This lifting handle 14 is provided with upgrading slot 141.Linear bearing 15 is fixed on two longerons 12 of support arm structure 1.
Described falling test stand also comprises base plate 2, be located at a column 3 of base plate 2 tops, also be provided with hoisting gear 4 on this column 3 and promote driving mechanism 5, support arm structure 1 promotes handle 14 by it and is connected with hoisting gear 4, column 3 is provided with guide rail 31, described linear bearing 15 is slidingly connected mutually with this guide rail 31, and hoisting gear 4 comprises a rigid bodies 41, and is installed in the lock release on this rigid bodies 41.Described rigid bodies 41 middle parts vertically are provided with a cavity 42 accommodating the upper end of described lifting handle 14, and upgrading slot 141 can match with lock release on the upper end of this lifting handle 14.
Described lock release is a pneumatic pumping pin 8, it comprises a backing pin 81, installs the backing pin guide way 82 of this backing pin 81 and the driving cylinder 83 that connects with this backing pin guide way 82, one end of backing pin 81 is formed with the backing pin head, this backing pin head just is pushed in the upgrading slot 141 that heads on the described lifting handle 14 after these driving cylinder 83 inflations, and die and shrink back backing pin head and from the upgrading slot 141 that promotes handle 14, sucked back driving cylinder 83, control being connected and disconnection of hoisting gear 12 and support arm structure 1 thus.
Offer the transversal slotting 21 that can hold described support arm structure 1 support bar 11 on the falling test stand base plate 2, make support arm after falling, its support bar 11 falls into transversal slotting 21, and the supporting surface of support bar 11 is positioned at below the floor level face.
During work, test product is placed on the support bar 11 of support arm structure, and the lifting handle 14 of this support arm structure by both sides is pulled along guide rail 31 vertical-lifts of column 3 or falls, and linear bearing 15 is responsible for guiding and is slided along guide rail 31.
Claims (7)
1. the support arm structure of a falling test stand, it is installed on the falling test stand, it is characterized in that: described support arm structure comprises transversely arranged complex root support bar, the longeron of fixedlying connected respectively with the two ends of this complex root support bar, and the lifting handle that is fixedly set in longeron top.
2. the support arm structure of falling test stand according to claim 1, it is characterized in that: described support bar is the vertical square tube of plural groups that is arranged in parallel, its two ends are respectively installed with the upwards bend pipe of bending.
3. the support arm structure of falling test stand according to claim 2 is characterized in that: described bend pipe upwards bending back is fixed with the longeron lower end of respective side, and two longerons be arranged in parallel.
4. the support arm structure of falling test stand according to claim 2, it is characterized in that: described support bar is two to four groups.
5. the support arm structure of falling test stand according to claim 1 is characterized in that: the two sheet steel welded structures that described longeron is established vertical gusset in being, the upper end bolt lifting handle of two longerons.
6. the support arm structure of falling test stand according to claim 4, it is characterized in that: described support arm structure comprises that also one is fixed in the linear bearing on the described longeron.
7. the support arm structure of falling test stand according to claim 1 is characterized in that: offer upgrading slot on the described lifting handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100981613A CN101266191B (en) | 2008-05-19 | 2008-05-19 | Falling test stand support arm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100981613A CN101266191B (en) | 2008-05-19 | 2008-05-19 | Falling test stand support arm structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101266191A CN101266191A (en) | 2008-09-17 |
| CN101266191B true CN101266191B (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100981613A Expired - Fee Related CN101266191B (en) | 2008-05-19 | 2008-05-19 | Falling test stand support arm structure |
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| CN (1) | CN101266191B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156031B (en) * | 2011-01-17 | 2012-07-04 | 武汉理工大学 | Dynamic test detecting platform for metal structure of crane |
| CN108168824B (en) * | 2017-12-01 | 2021-02-05 | 宁波巨科自动化科技有限公司 | Pneumatic type packaging falling machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203514Y (en) * | 2008-05-19 | 2009-03-04 | 苏州世力源科技有限公司 | Support arm structure of falling test stand |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203514Y (en) * | 2008-05-19 | 2009-03-04 | 苏州世力源科技有限公司 | Support arm structure of falling test stand |
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| CN101266191A (en) | 2008-09-17 |
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